Finding the Fourth Proportional to 306.40, 459.26 and 133.21
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Solution
The fourth proportional to 306.40, 459.26 and 133.21 is: 199.67
Step by Step Solution
- Step 1: Write the proportion equation
306.40 : 459.26 = 133.21 : x - Step 2: Convert to fraction form
306.40/459.26 = 133.21/x - Step 3: Cross multiply
306.40x = 459.26 × 133.21 - Step 4: Simplify right side
306.40x = 61,178.24 - Step 5: Solve for x
x = 61,178.24/306.40 - Step 6: Final answer
x = 199.67
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.